AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid

AMSOIL DOT 3 & 4 Synthetic Brake Fluid’s low-viscosity (817 cSt) provides superior cold-weather performance and excellent ABS and traction-control responsiveness. It covers a broad range of applications and exceeds DOT 3, 4 and 5.1 specifications.

Use AMSOIL DOT 3 & 4 Synthetic Brake Fluid in passenger car, light truck and powersports applications that require a DOT 3, 4 or 5.1 product. Do not mix with DOT 5 fluid.

5.0
star rating from
58
total reviews

This product is available in:

Individual 12 oz. Bottles
Cases of 12
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Product Code:

BFLVCN-EA

Review by Dave Mann

AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid Description

AMSOIL DOT 3 & 4 Synthetic Brake Fluid’s low-viscosity (817 cSt) provides superior cold-weather performance and excellent ABS and traction-control responsiveness. It covers a broad range of applications and exceeds DOT 3, 4 and 5.1 specifications.

Use AMSOIL DOT 3 & 4 Synthetic Brake Fluid in passenger car, light truck and powersports applications that require a DOT 3, 4 or 5.1 product. Do not mix with DOT 5 fluid.

AMSOIL DOT 3 & 4 Synthetic Brake Fluid

Brake fluid acts as a hydraulic fluid, transferring power and lubricating brake system components while also preventing corrosion. It must contend with extreme heat and the inevitable moisture contamination that can lead to a brake system failure. AMSOIL synthetic brake fluids surpass Department of Transportation (DOT) requirements and provide auto enthusiasts and racers with a brake fluid that delivers superior high temperature performance.

Fights Water Contamination

Water contaminates the brake system by seeping through microscopic pores inflexible brake lines and seals and through the reservoir fill cap. Brake fluid itself is hygroscopic (attracts moisture). Once introduced to the system, water reduces boiling points and compromises performance. It corrodes brake parts, lines and seals, leading to eventual failure. AMSOIL synthetic brake fluid’s superior wet boiling points counteract these problems. They lubricate and protect intricate brake components despite the inevitable water contamination. A nitrogen blanket is added to each bottle during manufacturing to purge moisture and ensure the maximum level of performance.

Firm Pedal Feel

The extreme pressure and high heat common to brake systems can push brake fluid beyond its boiling point, causing it to vaporize or “boil-off.” Water contamination can accelerate the process. This leads to a spongy or unresponsive feeling in the brake pedal (vapor lock). In contrast, the unique chemistry behind AMSOIL synthetic brake fluids increases boiling points well beyond DOT standards, even when contaminated with 3.7 percent water. AMSOIL Brake Fluids maintain a stable viscosity over a wide temperature range and flow easily at the high pressures generated in today’s automotive brake systems to deliver solid, reliable braking.

Maximum ABS and Traction-Control Performance

AMSOIL DOT 3 & 4 Synthetic Brake Fluid’s low-viscosity (817 cSt) provides superior cold-weather performance and excellent ABS and traction-control responsiveness. It covers a broad range of applications and exceeds DOT 3, 4 and 5.1 specifications.

Ultra-High Boiling Points

AMSOIL DOMINATOR® DOT 4 Synthetic Racing Brake Fluid features ultra-high boiling-points of 410ºF (wet) and 580ºF (dry). It maintains a low compressibility during the most extreme racing conditions.

TYPICAL TECHNICAL PROPERTIES

AMSOIL DOT 3 & DOT 4 Synthetic Brake Fluid (BFLV)

Technical Property AMSOIL DOT 3 and DOT 4 (BFLV) DOT 3 Specification DOT 4 Specification DOT 5.1 Specification
Equilibrium Reflux Boiling Point - Dry* °C (°F) 271 (520) Min 205 (401) Min 230 (446) Min 260 (500)
Equilibrium Reflux Boiling Point - Wet** °C (°F) 187 (368) Min 140 (284) Min 155 (311) Min 180 (356)
Viscosity -40°C (-40°F), cSt 817.0 Max 1500 Max 1800 Max 900
Viscosity 100°C (212°F), cSt 2.0 Min 1.5 Min 1.5 Min 1.5

* Dry equilibrium reflux boiling point (ERBP) - the boiling point of new, freshly opened brake fluid.

** Wet ERBP - the boiling point of brake fluid having absorbed 3.7 percent water.

PRODUCT APPLICATIONS

Use AMSOIL DOT 3 & 4 Synthetic Brake Fluid in passenger car, light truck and powersports applications that require a DOT 3, 4 or 5.1 product. Do not mix with DOT 5 fluid.

Refer to your owner’s manual regarding the proper change interval for your brake fluid and to determine the correct DOT classification. Change fluid every two years for maximum performance.

Use AMSOIL DOMINATOR® DOT 4 Synthetic Racing Brake Fluid in racing applications that require a DOT 4 product. Change fluid once a year for maximum performance. Consult the AMSOIL Product Guide at www.amsoil.com for more application information.

PRODUCT WARRANTY

AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL.com/warranty.aspx.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available at AMSOIL.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute. Recycle used fluid and bottle.

Reviews

5

star rating

brake fluid

amsoil was quick to ship product which is a great brake fluid

5

star rating

Good OEM replacement

I like this because I can use a little bit at a time to replace my clutch fluid reservoir and make sure it’s nice and clean. I prefer the ATE type 200, for it’s high performance. The only thing Amsoil can do to make it better in their line up is have something on par with ATE type 200. There does appear to be a void in product levels between their blue (oem replacement) and their red (track use) brake fluid.

5

star rating

First Brake Fluid flush

Fast and easy transaction. Fluid is quality. My brake system loved it!

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